Brooder.



E. MAURER.

BROODER. AYPPLLCATION. FILED JULY 16, 1915- Patented Maylfi, 1916.

THE COLUMBIA PLANOGRAPH c0, WASHINGTON, n. c.

the heat will be utilized to better advantage.

ERWIN MAURER, OF JAMAICA, NEW YORK.

Specification of Letters Patent.

BRO CIDER.

Patented May 16, 1916.

Application filed July 16, 1915. Serial No. 40,202.

To all whom it may concern Be it known that I, ERWIN MAURER, a citizen of the United States, residing at J amaica, Long Island, in the county of Queens and State of New York, have invented certain new and useful Improvements in Brooders, of which the following is a full, clear, and exact specification.

This invention relates to brooders, and has for its object to simplify and improve the construction of devices of this kind, whereby and the cost of manufacture and maintenance of the brooder reduced.

Other objects will appear as the description proceeds.

The invention will be first hereinafter de scribed in connection with the accompanying drawings, which constitute a part of this specification, and then more specifically defined in the claims at the end of the description.

In the accompanying drawings, wherein similar reference characters are used throughout the several views to designate corresponding parts :Figure 1 is a central vertical section of a brooder constructed substantially in accordance with this invention, and Fig. 2 is a plan view thereof, the circular shape of the dished plates being indicated in dotted lines.

The casing 1 of the brooder is preferably made cylindrical with its top closed, as at 2, and its bottom open and supported upon short legs 3. The usual curtain i is hung around the lower edge of the casing. Within the casing and transversely thereof, there are arranged two dished plates 5 and 6, the latter being spaced above the former to form a heating drum into which heated air from any suitable source (not shown) may enter through a pipe 10 opening into the drum near its bottom. The bottom plate 5 is concave, its lowest portion being in the center and preferably near the bottom edge of the casing so that it will be near the backs of the chicks in the inclosing curtain. The periphery of the plate 5 reaches to the juncture of the side walls of the casing and the top 2 thereof.

The upper plate 6 has a central convex portion extending out over the point where the heated air inlet pipe 10 opens, sald convex portion being designed for deflecting or throwing down the heat units upon the lower plate 5, thereby utilizing the heat units to the best advantage, the lower plate being the one which radiates the heat upon the chicks below it. The diameter of the convex portion of the upper'plate. is preferably about one-third that of the entire plate. From the margin of said convex portion the plate 6 is turned'upward into the general form of an inverted cone 8, the walls of said conical part being arranged substantially parallel to the outer marginal part of the lower plate 5 and spaced a short distance therefrom, thereby forming a narrow or restricted annular passage around the margin of the heating drum into which the heated air is directed by the upward incline therefor from the enlarged part of said drum below the convex central portion of the plate 6. A single outlet 11 is provided for the heated air in the drum, said outlet entering the restricted annular portion at the top thereof and diametrically opposite the inlet pipe 10. It will be noted that by reason of this construction, the heated air upon rising into the restricted annular passage of the drum is trapped therein and retained until its heating properties are spent, thus further economizing in fuel.

The periphery of the upper plate, of course, extends into contact with the top 2 of the casing to which it may be secured in any suitable manner. As shown, the upper plate 6 is supported by a rivet pin 7 depending from the top of the casing, said pin being disposed centrally and connected to the upmost portion of the convex part of the p ate.

As already indicated, the heated air from any suitable stove or lamp enters through the pipe 10 into the central enlarged portion of the drum between the plates 5 and 6, and after circulating in said enlarged portion rises into the restricted annular passage be-- tween the conical portion 8 of the upper plate and the corresponding portion 9 of the lower plate, in which passage said heated air is trapped and retained until its heating properties are spend. The outlet of the heated air through the pipe 11 is controlled by a damper or valve 12. The interior of the casing below the plate 5 may be provided with a ventilator 13.

The space in the casing above the plate 6 may be partially or fully filled with water for retaining the heat after the supply of heated air is stopped from any cause, or any other heat retaining medium may be placed through a filling nozzle 14:-

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

' 1. In a brooder, the combination with a casing, of a heating drum arranged therein and comprising an enlarged central portion and a restricted annular passage communicating therewith and extending outwardly and upwardly from the outer edge of said central enlarged portion, for the purpose specified.

2. In a brooder, the combination with a casing, of a heating drum arranged therein and comprising an enlarged central portion and a restricted annular passage communicating therewith and extending outwardly and upwardly from the outer edge of said enlarged portion and reaching to the top of the casing at the outer edge thereof for the purpose specified.

Copie: of this patent may be obtained for five cents each, by addressing the Qon muioner of EPaten ti,"

cating therewith and extending outwardly and upwardly from the outer edge of said central enlarged portion, an inlet pipe for "heated air entering the enlarged portion of the drum at one side, and an outlet pipe communicating with the upper portion of the restricted passage at the opposite side of the drum.

4;. In a brooder, the combination with a H casing, of a drum therein having a lower central portion and an upwardly inclined annular passage SUIIOHlldlIlg said central portion, and a heat retaining medium in the space between the drum and the top of the p caslng.

In testimony whereof I have signed my name to this specification.

ERWIN MAURER.

} Washington, D, 0. 

